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video: da8xx-fb: report correct pixclock

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Update "var" pixclock with the value that is configurable in hardware.
This lets user know the actual pixclock.

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Darren Etheridge <detheridge@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Afzal Mohammed 2013-08-05 17:02:28 -05:00 committed by Tomi Valkeinen
parent dbe8e48a3c
commit 404fdfe7f4
1 changed files with 11 additions and 0 deletions
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11
drivers/video/da8xx-fb.c
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@ -686,6 +686,15 @@ static inline unsigned da8xx_fb_calc_clk_divider(struct da8xx_fb_par *par,
return par->lcd_fck_rate / (PICOS2KHZ(pixclock) * 1000);
}
static inline unsigned da8xx_fb_round_clk(struct da8xx_fb_par *par,
unsigned pixclock)
{
unsigned div;
div = da8xx_fb_calc_clk_divider(par, pixclock);
return KHZ2PICOS(par->lcd_fck_rate / (1000 * div));
}
static inline void da8xx_fb_config_clk_divider(unsigned div)
{
/* Configure the LCD clock divisor. */
@ -962,6 +971,8 @@ static int fb_check_var(struct fb_var_screeninfo *var,
if (var->yres + var->yoffset > var->yres_virtual)
var->yoffset = var->yres_virtual - var->yres;
var->pixclock = da8xx_fb_round_clk(par, var->pixclock);
return err;
}